I don't like buy once cry once. How can you buy once if you don't know what you want. Better to start off cheap (try someone else's gear, secondhand etc.) and then invest in quality once you have a good idea on what you want. Also don't be afraid of Lee.
As for minimal kit:
Chronograph or access to one (I consider this a must)
Reloading handbook or online data (from a reputable source)
Beam scales
Powder dippers
Press
Priming tool (if not included with the press)
Calipers (vernier or dial)
Case trimmer
Chamfer and de-bur tool, primer pocket cleaner (usually bought as a set)
Two die set (full length and seating)
Shell holder
Case lube
Extras:
Case neck brush
Bullet comparator
Headspace comparator (to setup your sizing die for maximum brass life)
Bookmarks